Some crashkernel targets still use legacy NTLM auth, which
require those (bsc#869496). This patch enumerates all dependent
hash algorithems, because even though most of them are probably
compiled in, older ones (e.g. md4 and arc4) usually aren't.
Add new functions require_binaries() and require_any_binary() to be used
in the check() section of module-setup.sh.
These functions print a warning line telling the user, which binary is
missing for the specific dracut module.
This unifies the way of checking for binaries and makes the life of an
initramfs creator easier, if he wants to find out why a specific dracut
module is not included in the initramfs.
Daniel Molkentin